Shaker-bar



G. W. GARDNER.

' Grate.

No. 16,538. Patented Feb. 3, 1857.

NA PETERS. Piwhvlhogmphnr. Withinllnn. U. C.

'UNITED sTATEs PATENT oEEIoE.

G. W. GARDNER, OF TROY, NEW YORK.

SHAKER-BAR OF Specification of Letters Patent No.

To all whom it may concern.

Be it known that I, GEo. IV. GARDNER, of Troy, in the count-y of Rensselaer' and State of New York, have invented certain new and useful Improvements in Constructing and Arranging Stove-Grates and Their Appendages; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a plan view. Fig. 2 is a sectional view taken at the line w-fw of Fig. l and Fig. 3 is a sectional view taken at the line wof Fig. l; the saine letters having reference to like parts in each of the iigures.

The nature of my invent-ion consists in making the shaker bar to operate on a fulcrum at, or in the rim of the stove, thus avoiding the extended slot usually made in stoves Jfor the shaker bar to move in when the fulcrum is at t-he center of the grate; as hereinafter described.

The description of my improvement is as follows: A is the base plate of an airheating stove.

B is the grate attached in such a manner to t-he rock shaft O, by the pin or pivot (a), as to allow the grate a free horizontal vibrating motion when needed; this rock shaft at the place where the grate is attached to it, is swelled, or enlarged out into a circular form as shown by the dotted lines Fig. l, .which form prevents the pivot (a) from working loose when rocking the grate.

D is a cast iron expansion ring plate, which rests upon proj ect-ions (b cast upon the base plate; this ring encireles the grate, and lying over the rock shaft serves to keep the rock shaft and grate in their proper bearings and positions; and permits a vertical vibrating motion to be given to the grate when desired. This ring plate, also serves the purpose of a base, or support to the tire brick lining of the furnace, and is so constructed and arranged in regard to the base STOVE-GRATES.

16,538, dated February 3, 1857.

plate, as to leave a small space (c), between it and the base plate, into which space the ring plate expands by the heat of the fire, without coming in contact with the sides of the base plate, and receiving' the firstand inost intense action of the fire, it shields and protects the base plate from being cracked by the sudden unequal expansion of the plate by heat.

(d) is a stop or rest cast upon the base plate, for one edge of the grate to lie upon when at rest, which side or edge is made the most heavy, so as to cause it to rest upon thatside.

E is the shaker bar. In the base plate at (e), is cast a hole of suiiicient size to receive, hold, and serve the enlarged part of the bar at (f), as a fulcruln; while a horizontal mot-ion is given to the grate.

(y g) are projections cast upon the under side of t-he grate, for the purpose of holding the end of the shaker bar, while vibrating the grate; this method of constructing and using the shaker bar prevents any dust or ashes from getting into the apartment when shaking the grate.

By means of the fulcrum (f), in my shaker bar, I am able to revolve the grate B sufficiently without the extended slot, in the rim of the stove, for the shaker bar, in ordinary grates to move; thus confining the dust,` and ashes, in the stove while revolving the grate.

I-Iaving thus fully described my improvements in stove grates and appendages thereto, what I claim therein as new, and desire to secure by Letters Patent, is:

The shaker bar E .with the ulcrum for its equivalent, as described for the purpose of revolving the grate, without the usual slot in the stove; and confining the ashes in the stove, as set forth.

GEO. WV. GARDNER. l/Vitnesses:

J. J. SAVAGE, J. ROMEYN. 

